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Plants (Basel). 2019 Jul 23;8(7). pii: E243. doi: 10.3390/plants8070243.

The Diverse Roles of Auxin in Regulating Leaf Development.

Xiong Y1,2, Jiao Y3,4.

Author information

1
State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, China.
2
College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.
3
State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, China. yljiao@genetics.ac.cn.
4
College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China. yljiao@genetics.ac.cn.

Abstract

Leaves, the primary plant organs that function in photosynthesis and respiration, have highly organized, flat structures that vary within and among species. In recent years, it has become evident that auxin plays central roles in leaf development, including leaf initiation, blade formation, and compound leaf patterning. In this review, we discuss how auxin maxima form to define leaf primordium formation. We summarize recent progress in understanding of how spatial auxin signaling promotes leaf blade formation. Finally, we discuss how spatial auxin transport and signaling regulate the patterning of compound leaves and leaf serration.

KEYWORDS:

auxin; auxin signaling; auxin transport; compound leaf; leaf blade; patterning

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